Teleglobe and Equant Experiences?

I am currently evaluating some proposals from several vendors for an
international IP-based network. Most of the technologies are the same,
MLPS, and they can list routers brands and models, as well as give out
network reliability and SLA numbers, so there is something to go on
for technical matters.

However, for the ones that I'm not too familiar with, it's really hard
to guage things like customer service, billing, and their technical
support responsiveness. The two providers who I've not had a lot of
luck researching elsewhere are BCE Teleglobe and Equant. Does anyone
have some opinions they'd like to share? Feel free to email me
directly if you do not want to clog up the list or don't feel
comfortable making certain remarks public.

Thanks a lot.